Error: do not mutate vuex store state outside mutation handlers

Hi!

I’m trying to add vuex-multi-tab-state to an existing project and stuck with an error:

Error: do not mutate vuex store state outside mutation handlers

It’s hard to provide a minimal example, but I found a possible cause.

Here it is: https://github.com/gabrielmbmb/vuex-multi-tab-state/blob/0a46afc8f636744493ff0dc95bafd49780f3a49f/src/index.ts#L56

If change to

return mergeWith({}, oldState, newState, mergeCustomizer);

(create a new one object instead of change original)

the error doesn’t happen.

[gabrielmbmb]

As you pointed out, the function mergeWith was mutating the store state directly. This is fixed now and v1.0.13 has been released! Thank you again for reporting the issue!

[jonalxh]

Any update? I’m facing the same issue with Nuxt and vuex-multi-tab-state version ^1.0.16.